Number of results: 105,161
chemistry
Find the mass of barium metal (in grams) that must react with O2 to produce enough barium oxide to prepare 1.1 L of a 0.10 M solution of OH^ -.
Saturday, February 19, 2011 at 7:50pm by Jessica
Inorganic Chemistry
The atoms in barium metal are arranged in a body centered cubic unit cell. Calculate the radius of a barium atom in A if the density of barium is 3.50g/cm3. The atomic weight of barium is 137.34. The atoms in barium metal are arranged in a body centered cubic unit cell. ...
Sunday, October 15, 2006 at 7:55pm by Stephanie
Chemistry
The mass of a single barium atom is 2.28E-22 grams. How many barium atoms would there be in 182 milligrams of barium?
Wednesday, January 23, 2013 at 9:38pm by Kim
Chemistry
The mass of a single barium atom is 2.28E-22 grams. How many barium atoms would there be in 37.4 milligrams of barium
Monday, May 25, 2009 at 10:42am by Claudia
Chemistry(Please check)
What is the molar solubility of barium phosphate in a 0.282M barium acetate solution? If I set up and ice table I would have 0.282M - X = ? Would I use the molar mass of barium acetate to complete the equation to find X?
Thursday, April 26, 2012 at 4:28pm by Hannah
AP Chem
A chemist added an excess of sodium sulfate to a solution of a soluble barium compound to precipitate all of the barium ion as barium sulfate, BaSO4. How many grams of barium ion are in a 458-mg sample of the barium compound if a solution of the sample gave 513 mg BaSO4 ...
Monday, November 3, 2008 at 11:02pm by Anna
Chemistry - Please help!
Small quantites of hydrogen peroxide can be prepared by the action of an acid on an alkaline earth metal peroxide, such as barium peroxide. BaO2 (s) + 2HCl (aq) -> H2O2 (aq) + BaCl2 (aq) What mass of hydrogen peroxide should result when 15.0g of barium peroxide is ...
Monday, November 5, 2012 at 2:41pm by Frances
Chemistry
In the second half of the experiment 3mL of hydrochloric acid and 30mL of barium chloride were reacted with a 0.7g sample of alum to get barium sulfate. The question says based on the mass of barium sulfate (0.46g), calculate the mass of sulfate in your sample of alum.
Sunday, September 23, 2012 at 8:10pm by Zachary
Physics
Oh.. is actually C)to find how many actual kg of metal is in this in air and in water? mass of metal in water: .110kg mass of metal in air: .122kg mass of displaced water: .00706kg Thanks
Wednesday, December 12, 2007 at 12:59am by ~christina~
Chemistry
Consider the reaction: 3Ba(s)+N2(g)--->Ba3N2(s) 1)How many moles of barium metal react to produce 0.190 mol of barium nitride? 2)How many moles of nitrogen gas react?
Wednesday, December 14, 2011 at 9:08pm by Jackie
science
Calculating A sample of barium nitrate is placed into a jar containing water. The mass of the barium nitrate sample is 27 g. Assume the water is at 20 ºC and that the resulting barium nitrate solution is saturated. What mass of water is present in the jar? Use Figure 8-2 ...
Wednesday, December 21, 2011 at 12:21am by diane
chemistry
This problem is from my chemistry book and I am having a little trouble with the intermediary steps: Barium metal crystallizes in a body- centered cubic lattice (atoms at lattice points only) The unit cell edge length is 502 pm, and the density of the metal if 3.5g/cm^3. (...
Tuesday, May 18, 2010 at 3:59pm by Tokey
chemistry
in a particular experiment, 150.0 g of ammonium chloride were reacted with 290.0 g of barium hydroxide octahydrate, producing 157.2 g of water 1. find the limiting reagent in this situation 2. calculate the theoretical yield of water 3. calculate the percent yield of water 4. ...
Saturday, July 14, 2012 at 8:22am by ama
Chemistry
you add excess sodium sulfate to a solution of a soluble barium compound in order to precipitate all of the barium ion as barium sulfate, BaSO4. Suppose a 458 mg sample of the barium compound is dissolved to create the solution. Then when the sodium is added, 513 mg of barium ...
Monday, March 12, 2012 at 6:41pm by India
Chemistry
you add excess sodium sulfate to a solution of a soluble barium compound in order to precipitate all of the barium ion as barium sulfate, BaSO4. Suppose a 458 mg sample of the barium compound is dissolved to create the solution. Then when the sodium is added, 513 mg of barium ...
Monday, March 12, 2012 at 6:04pm by India
gen chemistry
Well, barium is ++ ion, and sodium is + ion, so it will thake half as much barium to react. moles barium= 1/2*.150L*1.4M or moles barium=.075*1.4 volume bariumchloride= .074*1.4/.6
Thursday, April 7, 2011 at 2:20pm by bobpursley
Chemistry
A solution contains an unknown mass of dissolved barium ions. When sodium sulfate is added to the solution, a white precipitate forms. The precipitate is filtered and dried and found to have a mass of 258 mg. What mass of baium was in the original solution? (Assume that all of...
Thursday, April 12, 2012 at 8:34pm by Beth
Science
Jake was doing a lab to find the density of metal. Here's his data: mass of the metal sample: 45 grams, volume of metal sample: 4.5 mL. Use his data to determine the density of the metal sample. Can you help? I don't get this.
Thursday, October 7, 2010 at 12:57pm by Haley
chemistry
what mass of barium sulfate can be recovered from mixing 48.75 mL of 0.1872 barium cloride with 27.5mL of 0.3500M sulfuric acid if the % yield is 81.7% ?
Tuesday, November 16, 2010 at 12:04am by popeye
Chemistry
While you're at it, also explain the following: paragraph 3. mass of flask with new liquid and stopper = 23.531. mass of flask and stopper = 32.634 (line 1). How can the flask weigh less when some liquid had been added to the empty flask??? No, the mass of metal is not 13....
Tuesday, October 16, 2007 at 5:05pm by DrBob222
chemistry
Calculate the number of moles of barium chloride in 456 g of a 3.17% by mass barium chloride solution.
Saturday, January 10, 2009 at 11:14am by Anonymous
chemistry
Calculate the mass of barium chloride you need to make a 0.200 m barium chloride solution with 100.0 g of water.
Thursday, April 19, 2012 at 2:37am by hereyago
Chemistry
Aluminum sulfate reacts with barium chloride to yield barium sulfate and aluminum chloride. What mass of barium sulfate is produced from 650 mL of 0.320 M of aluminum sulfate? Thank you.
Monday, September 27, 2010 at 7:27pm by Tara
physics
a block of metal has a length of 20cm, breadth 10cm and height 5cm. its mass is 2.7kg. find the density of the metal in g/cm3. find out what the block is made of.
Friday, August 19, 2011 at 1:21pm by tomba
shakhenbi
a block of metal has a length of 20cm, breadth 10cm and height 5cm. its mass is 2.7kg. find the density of the metal in g/cm3. find out what the block is made of.
Friday, August 19, 2011 at 1:16pm by tomba
chemistry
Data collected from the calorimetry of a metal mass of the metal = 110.62g initial temperature of the water in the cup = 23.0 C initial temperature of the metal in the boiling water = 99.02 C final temperature of the metal AND water in the cup=25.54C volume of the water =100....
Saturday, June 5, 2010 at 11:54am by coco
chemistry
Hydrogen peroxide can be produced in the lab by reacting barium peroxide with hydrochloric acid. another product of the reaction is barium chloride. 1). what is the balanced chemical equation for the reaction? 2). what mass of hydrogen peroxide should result when 1.50g of ...
Sunday, April 22, 2012 at 4:45pm by akboyer31
Chemistry
What metal? You dont want an active metal, or it will react with the water. I remember a college professor that submerged Magnesium and wondered what the bubbles forming were. Duh. Yes, I would use slighly cooled room temp water (room water with one ice cube added, remove the ...
Friday, February 19, 2010 at 8:06pm by bobpursley
chemistry
Although soluble barium compounds are toxic, suspensions of insoluble barium sul- fate are routinely swallowed for upper gas- trointestinal X-ray studies. Why is barium carbonate not used? 1. Stomachs contain HCl and all carbonates dissolve in acid.2. Barium carbonate is too ...
Wednesday, September 19, 2012 at 5:12pm by cheri
AP Chemistry
Although soluble barium compounds are toxic, suspensions of insoluble barium sul- fate are routinely swallowed for upper gas- trointestinal X-ray studies. Why is barium carbonate not used? 1. Barium carbonate is too expensive. 2. Barium carbonate is soluble in plain wa- ter. 3...
Friday, September 17, 2010 at 6:04pm by Nick
chem
actual mass chloride x (molar mass metal/molar mass metal chloride) = mass metal in the sample.
Tuesday, April 15, 2008 at 6:18pm by DrBob222
Chem
density = mass/volume. You know the mass from the problem, directly. The rest of the problem is about finding the volume. 268.5 = mass flask, H2O, metal -139.3 = mass flask -4.369 = mass meal ----------------- ansxxgrams = mass H2O Volume H2O = mass H20/density H2O = about 124...
Wednesday, December 5, 2012 at 9:52am by DrBob222
Fluid ''Physics''
A block of metal floats in oil of density 700Kg/m3 with 3/4 of volume in mass. Find the density of metal.
Sunday, November 6, 2011 at 3:32pm by Said
Chemistry
mass of empty flask with stopper = 32.634 g mass of flask with water and stopper = 59.479 g density of the water = 0.9973 g/cm^3 mass of water = 26.845 g volume of water = 26.918 cm^3 the flask is then emptied and an unknown substance is added mass of flask with new liquid and...
Tuesday, October 16, 2007 at 5:05pm by Vanessa
chemistry
metal loss of heat + water gain of heat = 0 [(mass metal x specific heat metal x (Tfinal-Tinitial)] + [mass H2O x specific heat H2O x (Tfinal-Tinitial)] = 0 Substitute the numbers and solve for specific heat metal. Then look up in a specific heat table to identify the metal.
Monday, March 18, 2013 at 2:59pm by DrBob222
AP Chem
Whew. long question. Barium carbonate is the source of barium compounds. It is produced in an aqueous precipitation reaction from barium sulfide and sodium carbonate. (Barium sulfide is a soluble compound obtained by heating the mineral barite, which is barium sulfate, with ...
Tuesday, October 28, 2008 at 12:02am by Anna-Marie
chemistry
The water will be heated by each metal. How much. q = mass H2O x specific heat H2O x delta T. Therefore for dT to be the smallest, you want q to be the smallest How much will the metal change? q = mass metal x specific heat metal x (Tfinal-Tinitial) q = 10g x specific heat ...
Wednesday, May 1, 2013 at 12:23am by DrBob222
Chemistry
1st find the heat of water in Joules. Heat absorbed by water is heat lost by metal. Use this to find Specific heat of metal: SH = J/mass*Change in Temp of metal SH = 640.152J/40g*41C SH = 390.33658854 x 10^-3 SH = .390 J/gC It's not gold whose SPHeat is .131...it is likely...
Friday, September 24, 2010 at 7:52pm by Shenellica Bettenourt
CHEMISTRY-For Dr.Bob
My chem class just finished a lab in which the objective was to find the percentage of silver and barium in a nitrate salt mixture by precipitating the chromates, separating out the precipitate from the solvent and spectator ions via filtration, and analysis of the combined ...
Tuesday, January 29, 2008 at 3:39pm by Catie
chemistry
The net ionic equations for the following 1. Dissolution of silver oxalate with nitric acid 2. Complexation of the iron(III) by the thiocyanate ion 3. Precipitation of the carbonate ion with barium ion 4. precipitation of the oxalate ion with barium ion 5. precipitation of the...
Tuesday, November 30, 2010 at 12:03pm by Jake
Chemistry
1) A compound has the following percentages by mass: barium, 58.84%; sulfur, 13.74%; oxygen, 27.43%. Determine the empirical formula of the compound. 2) If a 1.271-g sample of aluminum metal is heated on a chlorine gas atmosphere, the mass of aluminum chloride produced is 6....
Friday, December 30, 2011 at 11:07am by Natalie
Chemistry
HELP!!! An unknown metal having a mass of 14.00g is dropped into 11.00mL of water at 20.0 degrees Celcius. The starting temperature of the chunk of metal is 100.0C. The final temperature of the water and metal is 32.5C. What is the specific heat of the metal?
Wednesday, April 6, 2011 at 1:01am by Marie
Chemistry
A hint here, then read Ms. Sue's response above. heat gained by metal = q heat gained by metal is mass x specific heat metal x delta T. You know q, mass and delta T. That leaves only one unknown.
Saturday, October 18, 2008 at 10:35pm by DrBob222
physics
a pieces of metal of mass 3.6kg is suspended from a spring balance, what is the reading of spring balance in newton, with a metal in air, with the metal in water, the metal in prime and what is the density in which it gives a reading of 33newton
Sunday, November 7, 2010 at 9:30am by fola
Chemistry
Need help with my lab report for specific heat of unknown metal! I need to Find the Specific Heat of Al! I know its Q= M x Cs x Change in Temp I am getting a such a high number am just confused if its right. Here is what I got in Lab: Aluminum Mass of Metal (Mm): 6.128g Mass ...
Friday, June 24, 2011 at 12:14am by Tc
Chemistry
I don't know exactly how many problems you have here since you refer in your answer to the latest problem with water. So check this work very carefully for I have assumed this is just one giant problem. I still don't get paragraph 2 where an unknown liquid was added ...
Tuesday, October 16, 2007 at 5:05pm by DrBob222
chem
Two metals of equal mass, A and B, both at a temperature of 25 degrees celsius, are placed in separate but identical beakers of cold water. Metal A has a larger specific heat than metal B. Metal A is in Beaker 1, and metal B is in Beaker 2. Which beaker (if any) will exhibit a...
Friday, July 1, 2011 at 5:18pm by lynn
ocean county college
A 150 g sample of metal at 55.0 C raises the temperature of 150 g of water from 23.0 C to 35.0 C. Determine the specific heat of the metal in J/g C. Hint: #1 First find heat absorbed by water using formula q = mass x specific heat x change in temp (of water). #2 Use this value...
Sunday, March 21, 2010 at 8:10pm by adina
medicine
A patient was experiencing indigestion almost every day. The physician performed an upper GI series, also known as a ____ test. a) bronchographic b) barium enema c) cholangiographic d) barium swallow I've been searching for hours and cant find the answer. Please help!!!
Friday, August 6, 2010 at 6:52pm by Dylan
CHEMISTRY
My chem class just finished a lab in which the objective was to find the percentage of silver and barium in a nitrate salt mixture by precipitating the chromates, separating out the precipitate from the solvent and spectator ions via filtration, and analysis of the combined ...
Monday, January 28, 2008 at 3:48pm by Catie
chemistry
heat lost by hot metal + heat gained by cooler water = 0 [mass metal x specific heat metal x (Tfinal-Tinitial)] + [mass H2O x specific heat water x (Tfinal-Tinitial)] = 0 Solve for specific heat metal. You have all of the other items.
Saturday, January 21, 2012 at 9:27pm by DrBob222
ap chem
A 1.42 g. sample of a pure compound, with formula M2SO4, was dissolved in water and treated with and excess of aqueous barium chloride, resulting in the precipitation of all the sulfate ions as barium sulfate. The precipitate was collected, dried, and found to weigh 2.33-g. ...
Monday, October 11, 2010 at 6:20pm by josh sears
Chemistry
heat lost by metal + heat gained by water = 0 [mass metal x specific heat metal x (Tfinal-Tinitial)] + [mass H2O x specific heat H2O x (Tfinal-Tinitial)] = 0 Substitute the numbers and solve for the only unknown, the specific heat of the metal.
Monday, April 16, 2012 at 12:26am by DrBob222
Physics
A glider (mass = 0.12kg ) on a frictionless horizontal air track is connected by a light string over a pulley to a metal block (mass = 0.13kg ) hanging vertically (see figure below). The objects are released from rest and move 0.44 m . a)Find the objects' acceleration. b)...
Wednesday, October 12, 2011 at 5:05pm by Eman
chemistry
1) [mass metal x specific heat metal x Tfinal-Tinitial)] + [mass H2O x speicif heat water x (Tfinal-Tinitial) = 0 Only one unknown, specific heat metal. Solve for that. 2)Use the Law of Dulong and Petit
Thursday, November 13, 2008 at 12:37pm by DrBob222
Fluid ''Physics''
displacement mass: 3/4 V*700kg/m^3 because this also equals the mass of the metal... density metal= massabaove/V= .75*700kg/m^3
Sunday, November 6, 2011 at 3:32pm by bobpursley
chemistry(Urgent Please help)
A student is asked to standardize a solution of barium hydroxide. He weighs out 0.945 g potassium hydrogen phthalate (KHC8H4O4, treat this as a monoprotic acid). It requires 33.9 mL of barium hydroxide to reach the endpoint. A. What is the molarity of the barium hydroxide ...
Sunday, November 20, 2011 at 3:53pm by Hannah
chemistry
heat lost by metal + heat gained by H2O = 0 [mass metal x specific heat metal x (Tfinal-Tinitial)] + [mass H2O x specific heat H2O x (Tfinal-Tinitial)] = 0 Substitute and solve for specific heat metal, then look in specific heat tables and identify the metal with that specific...
Friday, March 15, 2013 at 2:56pm by DrBob222
Chemistry
In trial one the mass of silver oxide is .5g. The mass of silver metal product is .431 grams. In trial two the silver oxide=.498 and silver metal=.388. How do you use this information and the conservation of mass to calculate the mass of oxygen that combined with the silver?
Sunday, September 19, 2010 at 7:41pm by mike
chemistry
in trial one the mass of silver oxide is .5g. The mass of silver metal product is .431 grams. In trial two the silver oxide=.498 and silver metal=.388. Use the conservation of mass to calculate the mass of oxygen that combined with the silver
Sunday, September 19, 2010 at 3:05pm by kelly
Chemistry
How do these react? Some may have no reaction. a. aqueous chromium(III) nitrate plus magnesium metal b. aqueous lithium sulfate plus aqueous barium chloride c. solid lead metal plus aqueous potassium chloride d. aqueous lithium fluoride with aqueous ammonium phosphate
Monday, April 4, 2011 at 10:49pm by Blaire
Chemistry
q = mass metal x specific heat metal x (Tfinal-Tinitial) Substitute q, mass metal, Tfinal and Tinitial and solve for specific heat. Compare with that of pure Au.
Monday, May 28, 2012 at 3:21pm by DrBob222
Maths
A hollow spherical metal ball has internal radius 1cm. If the metal is 1/2 cm thick, find the volume of metal ( Take pi equals 22/7)
Wednesday, January 11, 2012 at 12:53am by Math's Noob
Chemistry(Please help)
What is the molar solubility of barium phosphate in a 0.282M barium acetate solution? If I set up and ice table I would have 0.282M - X = ? Would I use the molar mass of barium acetate to complete the equation to find X? Ba3(PO4)2 ==> 3Ba^2+ + 2PO4^3- Ba(C2H3O2)2 ==&...
Saturday, April 28, 2012 at 5:02pm by Hannah
Chemistry
I have an assigment question that I need help with. The Q states that sodium hydroxide absorbs water from the atmosphere. Then the saturated NaOH absorbs carbon dioxide from the air to form a thin coating of sodium carbonate. A piece of sodium hydroxide has been left on a ...
Monday, April 16, 2007 at 5:30am by Fiona
chemistry
heat lost by metal + heat gained by H2O=0. [mass metal x specific heat metal (Tfinal-Tinitial)] + [mass water x specific heat water x (Tfinal-Tinitial)] = 0 Solve for specific heat metal, the only unknown..
Sunday, October 31, 2010 at 5:12pm by DrBob222
Chemistry
The Densities of Liquids and solids O.k. so here is my problem. I will give you the whole problem just incase my mistake is somewhere else, but the volume for the metal and the density for the metal in the end seem to be wrong. (Density of unknown liquid) Mass of empty flask ...
Wednesday, August 22, 2007 at 5:30pm by Sara
chemistry
2 moles of aqueous Barium Nitrate is combined with 1 mole of aqueous Sodium Sulfate. Assuming 100% yield, what mass of Barium Sulfate precipitate would be produced. 1. 175.043 grams 2. 233.391 grams 3. 466.781 grams 4. 116.953 grams
Friday, October 21, 2011 at 10:51pm by chelsy
chemistry
A crystalline material containing 30 grams of barium chloride crystals was placed into an oven at 400 degrees c and heated for two hours. It was then cooled and weighed. the new mass was less than before it was heated, containing 20 grams if barium chloride. How is this possible?
Thursday, January 27, 2011 at 11:15pm by eric
Physics
a pieces of metal of mass 3.6kg is suspended from a spring balance, what is the reading of spring balance in newton, with a metal in air, with the metal of 33newton
Monday, November 8, 2010 at 2:58am by fola
chemistry
Convert 2.241 g Ni to mols. Determine mass oxygen fron mass metal oxide - mass metal = mass oxygen. Convert g oxygen to mols oxygen ATOMS. Deterime ratio of atoms. Those will be the subscripts. Post your work if you get stuck.
Monday, March 31, 2008 at 1:39pm by DrBob222
AP Chemistry
An unknown metal M forms a soluble compound, M(NO3)2. A solution of M(NO3)2 is electrolyzed. When a constant current of 2.5 amperes is applied for 35 minutes, 3.06 grams of the metal M is deposited. Calculate the molar mass of M and identify the metal.
Monday, April 8, 2013 at 11:30pm by Summer
Chemistry
The steps to getting the answer. A certain metal oxide has the formula MO where M denotes the metal. A 39.46g sample of the compound is strongly heated in an atmosphere of hydrogen to remove oxygen as water molecules. At the end, 31.70g of the metal is left over. If O has an ...
Thursday, August 26, 2010 at 11:47pm by Amy~
college chem
In this experiment a hot metal block at 100oC is added to cold water in a calorimeter. The heat lost by the metal block equals the heat gained by the water and the two end up at the same temperature. In one experiment, the mass of the metal block is 89.5 grams, the volume of ...
Thursday, October 8, 2009 at 4:30pm by Sarah
Chemistry
heat lost by metal + heat gained by water = 0 [mass metal x specific heat metal x (Tfinal-Tinitial)] + [mass H2O x specific heat H2O x (Tfinal-Tinitial)] = 0 Substitute and solve for specific heat metal.
Tuesday, February 14, 2012 at 11:07pm by DrBob222
Chemistry
The reaction of aqueous solutions of barium chloride and sodium sulfate results in the formation of a precipitation of barium sulfate. Sodium chloride is also formed but is soluble in water. Why would you use filtration to isolate the barium sulfate rather than evaporation or ...
Thursday, March 8, 2012 at 5:22am by teetee
College Chemistry
a (s) is obtained by mixing 25ml of 0.5 mol/l HCl and 25ml of 0.5 mol/l H2SO4 solution is titrated with 93.75ml of barium hydroxide solution 1-write the ionic eq. 2- calculate C 3. determine mass of barium sulfate obtained:P *molar masses: Ba=137 S=32 O=16
Wednesday, July 7, 2010 at 5:07pm by moe
chemistry
I assume the density of the water is 1.00 g/mL but there is nothing in the problem to support that. [mass metal x specific heat metal x (Tfinal-Tinitial)] + [mass water x specific heat water x (Tfinal-Tinital)] = 0 I believe the only unknown is specific heat metal.
Saturday, June 5, 2010 at 11:54am by DrBob222
Chemistry
No, you didn't have two metals. I might buy 45 g in the first statemenet for mass metal but the 130g must be the mass of the water. Substitute those numbers where I have mmetal and mw and solve for specific heat metal.
Tuesday, October 9, 2012 at 11:40pm by DrBob222
chemistry
What mass of barium sulphate can be produced when 100.0 mL of a 0.100 M solution of barium chloride is mixed with 100.0 mL of a 0.100 M solution of iron (III) sulphate? Please explain!
Monday, December 12, 2011 at 11:04pm by Rachel
Thermochemistry
q = mass metal x specific heat metal x delta T. Solve for specific heat metal, the only unknown.
Sunday, October 17, 2010 at 9:20pm by DrBob222
Chemistry
Suppose 2 grams of an unknown metal carbonate MCO3 is reacted with excess HCl and 0.88 grams of CO2 are produced. What is the atomic mass (molar mass) of the unknown metal M? What element is it?
Sunday, October 7, 2012 at 10:56pm by Anonymous
chemistry
what mass of barium sulphate can be produced when 100.0 ml of a 0.100M solution of barium chloride is mixed with 100.0 ml of a 0.100M solution of Iron(lll) sulphate?
Sunday, November 20, 2011 at 11:02am by NONO
chemistry
I assume you meant "the temperature rises to ...." (mass metal x specific heat metal x delta T) + (mass water x specific heat water x delta T) = 0 The only unknown is specific heat metal.
Tuesday, September 22, 2009 at 11:25pm by DrBob222
chemistry
q = mass metal x specific heat metal x (Tfinal-Tinitial)
Thursday, September 27, 2012 at 9:08pm by DrBob222
chemistry
Cp for H2O is given in the problem. Last line in your post. Use equation 2 first. You know mass H2O, you know Cp H2O, and you know delta T. Calculate q. Plug that q into equation 1. Now you have q, mass metal, and delta T metal. Calculate Cp metal.
Friday, February 8, 2008 at 7:55pm by DrBob222
science
an unknown metal has a volume of 20cm^3 and a mass of 54g. Identify the metal
Sunday, April 11, 2010 at 2:36pm by Matthew
AP Chemistry
[mass metal x specific heat metal x (Tfinal-Tinitial)] +[(mass water x specific heat water x (Tfinal-Tinitial)] = 0 Solve for specific heat metal, the only unknown in the equation. The first set of brackets is the loss of heat from the metal, the second set of brackets is the ...
Monday, February 15, 2010 at 3:04pm by DrBob222
chemistry
1. What are the lab and industrial procedures when using barium? 2. What are some agricultural uses of barium, if any? Help would be so greatly appreciated!
Thursday, May 29, 2008 at 7:29pm by Shaniqua
chemistry
if the mass of a metal is 127.70 grams, what is number of moles on the metal in the cube?
Tuesday, October 16, 2012 at 3:03am by Tracy
Chem
A block of metal has a width of 3.2 , a length of 17.1 , and height of 4.8 . Its mass is 1.2 . Calculate the density of the metal.
Wednesday, September 22, 2010 at 8:44am by Anonymous
Chemistry
What is the maximum mass of the lower molar mass product that can be formed when 71.0 g of solid barium bromide and 44.5 g chlorine gas react?
Sunday, April 10, 2011 at 4:59pm by Robbie
chemistry
In a calorimetry experiment in the lab, you were able to record the following data: Mass of water in a calorimeter = 90.0 g Initial temperature of water in calorimeter = 22.0o C Mass of unknown metal = 45.0 g Initial temperature of hot metal = 100.0o C Final temperature of ...
Friday, February 8, 2008 at 7:55pm by James
chem
q = mass metal x specific heat metal x (Tfinal - Tinitial). Solve for the one unknown in the equation.
Thursday, June 10, 2010 at 5:10pm by DrBob222
chemistry
A certain metal hydroxide, M(OH)2 contains 32.8% oxygen by mass. What is the identity of the metal M? I dont understand what its asking for.
Saturday, September 20, 2008 at 5:30pm by anonymous
chemistry
a 2.800 g sample of metal M reacted with oxygen to form 3.365 g Ms)3. What is the atomic mass of the metal M?
Sunday, September 16, 2007 at 3:45pm by julie
Chemistry
A mass of 0.200 kg of an unknown metal at 94C is placed in 0.3 kg of water at 10C. The final temperature of the metal and water are 20C. What is the specific heat capacity of the unknown metal?
Wednesday, October 20, 2010 at 12:06pm by Cas
Chemistry
Block A of an unknown metal has a volume of 125cm^3 . Block B of a different metal has a volume of 145cm^3. If block A has a greater mass than block B, what can be said if the relative densities of two metal?
Friday, January 18, 2013 at 2:27pm by Quan
Chemistry
heat lost by metal + heat gained by H2O = 0 [mass metal x specific heat metal x (Tfinal-Tinitial)] +[mass H2O x specific heat H2O x (Tfinal-Tinitial)] = 0 Substitute and solve for specific heat metal.
Thursday, December 20, 2012 at 7:37am by DrBob222
chemistry
I'm sure you know what will happen so I'll leave the first part to you. To be more quantitative, you need the following: q(heat lost by metal) = mass metal x specific heat metal x (Tfinal-Tinitial). q(heat gained by water) = mass H2O x specific heat water x (Tfinal-...
Tuesday, April 29, 2008 at 5:03pm by DrBob222
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